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    <title>Document</title>
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<body>
    <h1>首页</h1>
    <h1>商品</h1>
    <h1>详情</h1>

    <script>
        let reg = /^a{3}b&/;
        let str = "a333b"
        console.log(reg.test(str));
    </script>

    <script>
        document.write("邓游龙学习中")
        console.log("吕锋");
    </script>



    <span>1111111111</span>
    <span>2222222222</span>
    <button onclick="f()">测试</button>
    <script>
        function f(){
            alert(测试by李沂举)
        }
        console.log(韦万鑫);
    </script>
    <h1>？</h1>
    <h1>李坚金到此一览</h1>
    <h1>艾佳艺</h1>

    <h1>？</h1>

    <h1>？</h1>

    <h1>李坚金到此一览</h1>

    <h1>曹赐</h1>

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